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[Regression?] 1ea0ce4069 ("selinux: allow changing labels for cgroupfs") stops Android from booting

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Hey folks,
   I've not been able to figure out why yet, but I wanted to raise the
issue that last night I found I couldn't boot Android on my Hikey
board with Linus' HEAD kernel. It seems to cause logd to crash
repeatedly so I'm not able to get debug info from logcat.

I do see the following over and over on the console:

[   12.505838] init: computing context for service 'logd'
[   12.506355] init: starting service 'logd'...
[   12.507683] init: property_set("ro.boottime.logd", "12500792498")
failed: property already set
[   12.508701] init: Created socket '/dev/socket/logd', mode 666, user
1036, group 1036
[   12.509294] init: Created socket '/dev/socket/logdr', mode 666,
user 1036, group 1036
[   12.509891] init: Created socket '/dev/socket/logdw', mode 222,
user 1036, group 1036
[   12.510132] init: Opened file '/proc/kmsg', flags 0
[   12.510187] init: Opened file '/dev/kmsg', flags 1
[   12.510353] init: couldn't write 1941 to
/dev/cpuset/system-background/tasks: No such file or directory
[   12.533046] init: Service 'logd' (pid 1941) exited with status 255


I did some bisection and narrowed it down to 1ea0ce4069 ("selinux:
allow changing labels for cgroupfs"), which was merged in yesterday.
I've not yet been able to figure out the root cause, but reverting
that patch makes things work again.

So I wanted to raise the issue here so folks were aware.

If there is anything folks want me to test or try, please let me know.

thanks
-john

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[Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting John Stultz <john.stultz@linaro.org> - 2017-02-23 20:00 +0100
  Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Paul Moore <paul@paul-moore.com> - 2017-02-24 01:10 +0100
    Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting John Stultz <john.stultz@linaro.org> - 2017-02-25 03:10 +0100
      Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Nick Kralevich <nnk@google.com> - 2017-02-25 04:50 +0100
      Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting John Stultz <john.stultz@linaro.org> - 2017-02-25 05:40 +0100
    Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Stephen Smalley <sds@tycho.nsa.gov> - 2017-02-27 20:50 +0100
      Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Stephen Smalley <sds@tycho.nsa.gov> - 2017-02-27 22:40 +0100
      Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Nick Kralevich <nnk@google.com> - 2017-02-28 02:00 +0100
        Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Stephen Smalley <sds@tycho.nsa.gov> - 2017-02-28 02:10 +0100
          Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Paul Moore <paul@paul-moore.com> - 2017-02-28 04:30 +0100
            Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Stephen Smalley <sds@tycho.nsa.gov> - 2017-02-28 16:30 +0100
              Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Paul Moore <paul@paul-moore.com> - 2017-02-28 18:30 +0100
      Re: [Regression?] 1ea0ce4069 ("selinux: allow changing labels for  cgroupfs") stops Android from booting Stephen Smalley <sds@tycho.nsa.gov> - 2017-02-28 02:40 +0100

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